condition	mean	min	max
4 h after light	8.296694	7.337518	9.25587
8 h after light	7.5066725000000005	7.166228	7.847117
12 h after light	7.2944765	7.218298	7.370655
4 h after dark	7.7746390000000005	7.702161	7.847117
8 h after dark	7.798439	7.047784	8.549094
12 h after dark	8.30124	8.30124	8.30124